St Margaret's Farmhouse is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 19 March 1987. Farmhouse. 1 related planning application.

St Margaret's Farmhouse

WRENN ID
endless-pavement-root
Grade
II
Local Planning Authority
Dacorum
Constituency
Harpenden and Berkhamsted MP: Victoria Collins (LD)
Country
England
Date first listed
19 March 1987
Type
Farmhouse
Address
St Margaret's Farmhouse, Great Gaddesden, HP1 3BZ
OS grid reference
TL 022 113
Coordinates
51.79154, -0.51949
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

St. Margaret's Farmhouse is a timber-frame building, likely dating to the 17th century or earlier, and renovated in the 19th and 20th centuries. The main range was originally timber-framed and later cased in red brick in a stretcher bond around 1940. A rear wing and a north porch were added in 1882 as part of renovations for Lord Brownlow’s Ashridge Estate, as indicated by a stone plaque on the porch bearing his coronet and cipher. The house is in a roughly T-shape, facing north, and is two stories high. The north front has a small gabled porch near the center, and two-light casement windows with segmental two-ring arches. A pentice (a projecting roofed shelter) runs along the west side of the rear wing, and an entrance passage is situated at the junction with the north part of the house. On the south wall of the west room on the ground floor, portions of the original timber frame are visible where plaster has been damaged, revealing the post and rail construction. An early 18th-century two-panel door with ovolo and fillet mouldings is present. The kitchen in the south wing has a stone floor.

Local climate

St Margaret's Farmhouse sits in a drier-than-average part of the UK, with an average of 730 mm of rain a year. This makes it drier than 78% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 77% of listed buildings.

It experiences an average of 36 freeze-thaw cycles a year, more than 64% of listed buildings. Of these, 17 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 4 transactions since 1997
  • Related listed building consents — 1 application
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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